Hub



FIG. 1 is a perspective view of a hub showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures are for the purpose of illustrating portions of the hub and form no part of the claim. 

CLAIM The ornamental design for a hub, as shown and described. 